| BA |
| Name | Number of records |
| Babyboy's Little Publishing Company | 144 |
| Baby Mae Music | 636 |
| Backbone Publishing | 333 |
| Backer Spielvogel Bates | 438 |
| Backer & Spielvogel, Inc. | 833 |
| Ba-Dake Music, Inc. | 408 |
| Bagdasarian Productions | 332 |
| Baker Book House Company | 849 |
| Balboa Records Company | 190 |
| Ballinger Publishing Company | 339 |
| Bamatuck Music, Inc. | 287 |
| Bankers Trust Company | 1096 |
| Bank of America, NA | 857 |
| Bank of America National Trust and Savings Association, LosAngeles | 973 |
| Bank of America, N.T. & S.A. | 1728 |
| Bank of New York | 697 |
| Banks-Baldwin Law Publishing Company | 954 |
| Bantam Audio Publishing | 318 |
| Bantam Books, Inc. | 1087 |
| Bantam Doubleday Dell Audio Publishing | 672 |
| Bantam Doubleday Dell Publishing Group, Inc. Doubleday | 114 |
| Bantha Music | 133 |
| Baray Music, Inc. | 2510 |
| Barbour Publishing, Inc. | 778 |
| BarBri | 497 |
| BarBri Group | 227 |
| Barnell Loft, Ltd. | 914 |
| Barney Music | 182 |
| Barron's Educational Series, Inc. | 3956 |
| Barton Music Corporation | 93 |
| Basic Books, Inc. | 378 |
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